Annex
69
Trouble shooting guide
Problem Possible
cause
Solution
When picking up the handset you
do not hear the dialling signal.
The Power LED is off.
Power line outage.
Check mains power, e.g. by
plugging in another electrical
device.
AC adapter not plugged in.
Plug in AC adapter
When picking up the handset you
do not hear the dialling signal.
The Power LED is on.
Telephone connection not
working.
Check telephone connection and
installation.
Telephone defective.
Try to use telephone with another
port.
Settings of telephone system
compromised
Remove AC adapter from mains
and then plug it in again.
You are not receiving any calls.
'Do not disturb' activated (check
if there is a fast dialling signal)
Deactivate 'Do not disturb' (see
page 25)
Call deflection activated (check if
there is a fast dialling signal)
Deactivate call deflection (see
page 19)
AC adapter not plugged in.
Plug in AC adapter
Telephone connection not
working.
Check telephone connection and
installation.
Telephone defective.
Try to use telephone with another
port.
Settings of telephone system
compromised
Remove AC adapter from mains
and then plug it in again.
You are not receiving any
external calls.
External line not connected.
Plug telephone line into wall
outlet.
External line out of order.
Plug a telephone directly into the
wall outlet of the external
telephone line and check external
line this way.
Or unplug the AC adapter and
then pick up the handset of
telephone 21. If you now hear
the external dialling signal the
external line is working properly.
